Apple iPhone iOS 5.1 - Manual (Page 168)

Reset
You can reset the word dictionary, network settings, home screen layout, and location warnings.
You can also erase all of your content and settings.
Erase all content and settings: Go to Settings > General > Reset, then tap Erase All Content
and Settings.
After confirming that you want to reset iPhone, all content, your information, and settings are
removed. iPhone cannot be used until it’s set up again.
Reset all settings Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset.
Reset network settings Go to Settings > General > Reset and tap Reset Network Settings.
When you reset network settings, your list of previously used networks and
VPN settings not installed by a configuration profile are removed. Wi-Fi is
turned off and then back on, disconnecting you from any network you’re
on. The Wi-Fi and “Ask to Join Networks” settings remain turned on.
To remove VPN settings installed by a configuration profile, go to Settings >
General > Profile, then select the profile and tap Remove. This also removes
other settings or accounts provided by the profile.
Reset the keyboard dictionary Go to Settings > General > Reset and tap Reset Keyboard Dictionary.
You add words to the keyboard dictionary by rejecting words iPhone
suggests as you type. Tap a word to reject the correction and add the word
to the keyboard dictionary. Resetting the keyboard dictionary erases all
words you’ve added.
Reset the Home screen layout Go to Settings > General > Reset and tap Reset Home Screen Layout.
Reset location warnings Go to Settings > General > Reset and tap Reset Location Warnings.
Location warnings are requests made by apps to use Location Services.
iPhone presents a location warning for an app the first time the app
makes a request to use Location Services. If you tap Cancel in response, the
request isn’t presented again. To reset the location warnings so you get a
request for each app, tap Reset Location Warnings.
Settings for apps
See other chapters for information about settings for apps. For example, for Safari settings, refer to
Chapter 7, “Safari,” on page 72.
168 Chapter 32 Settings